The debacle in DC regarding the funding of the government and the raising of the debt limit has weakened US markets relative to the rest of the world. This relative weakness shows up clearly when looking at the US' share of global stock market capitalization, which Bloomberg tracks on a daily basis.
Over the first half of 2013, the US made huge gains on the rest of the world as our stock market rallied while a lot of other countries struggled. At the end of July, the US' percentage of world market cap peaked at 35.9%, which was up nearly 3 percentage points since the start of the year. Since the end of July, however, our share has weakened pretty significantly, falling from 35.9% down to its current level of 34.6%.
As the European economy has found its footing in recent months, our elected leaders appear to be doing everything they can to weaken ours.